SI2404-D-FS

Overview

The Skyworks Solutions SI2404-D-FS is a system-side component of the ISOmodem family, designed for embedded modem applications. It operates with a digital supply voltage (VD) ranging from 3.0 V to 3.6 V and supports ambient temperatures from 0°C to 70°C (F-grade). The device provides data rates up to 33.6 kbps using ITU-T V.34 and V.32bis protocols. It features UART, SPI, or parallel host interfaces and utilizes flexible clocking options including 32.768 kHz, 4.9152 MHz, or 27 MHz inputs. The integrated Direct Access Arrangement (DAA) offers over 6000 V capacitive isolation.

Feature Summary

• Integrated Direct Access Arrangement (DAA) providing global telephone line interface compliance
• Supports standard AT command sets and firmware upgrades via EEPROM interface
• Flexible host connectivity through UART, SPI, or parallel bus modes
• Automatic rate negotiation and caller ID decoding capabilities

Applications

• Set-top boxes
• Point-of-sale terminals
• Text and video telephones
• Digital video recorders
• Remote monitoring systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with the paired Si3018/10 line-side device as specified in the chipset combination list within the datasheet. Confirm RoHS compliance status and lead times directly with authorized distributors prior to procurement.

Selection Notes

Select the SI2404-D-FS when utilizing the 16-pin SOIC packaging option for space-constrained designs. This model supports data rates up to 33.6 kbps, suitable for V.34 and V.32bis protocols. Verify that the application requires the specific pinout configuration associated with the 16-pin variant rather than the 24-pin TSSOP version.

Part Context

This component belongs to the ISOmodem family, which includes the Si2457, Si2434, Si2415, and Si2404 system-side devices. These chips are designed to work in conjunction with the Si3018 or Si3010 line-side devices to form a complete modem solution. The family eliminates the need for external DSPs, codecs, and transformers.

Replacement Considerations

Publicly confirmed substitutes include other members of the ISOmodem family such as the Si2415-D-FS or Si2434-D-FS, provided they match the required data rate and pinout specifications.